NAId'IsSUS. 



!■) 



1'. mperal ure: 

 .\. gloria mundi, in va ! 71 to 72. 8°, in all at 71 U 



meat) 7-1. 5°. 

 N. poi on it., in majority ;ii 73 i" 7 1', in all at 77 to i 



mean 77.5°. 

 V liery cross, in i .1 to ~-°, in all at 73 5 ti 



mean 74°. 



The reai tivitj of N. gloria mundi is higher than thai 

 of the other parenl in the reactions with polarization, 

 iodine, gentian violet, and temperature; and lowi 

 the safrauin reaction. The reactivity of the hybrid is 

 the same or pracl the same as thai of N. gloria 



mundi in the iodine and safranin reactions, and slightly 

 higher in the temperature reaction; the same or prac- 

 tically the same as thai of the i thi ■■ parenl in the polar- 

 ization reaction; and mid-intermediate in the gentian 

 Yinli't read ion. 



Table A L5 shows the reaction-intensities in percent- 

 of total starch gelatinized at definite intervals 

 (minutes) : 



Table A 15. 



Velocity-reaction Corves. 



This section treats of the velocity-reaction curves 

 of the starches of Narcissus gloria mundi, N. poetv as 

 ornatus, and N. fiery cross, showing quantitative differ- 

 ences in the behavior toward different reagents at definite 

 time-intervals. (Charts D28'i to D 292.) 



The most conspicuous features of these Sve charts 

 are: 



(1) The closeness of all three curves in all of 

 reactions, with the exception of that with chromic acid at 

 the 15-minute interval, at which time the three curves 

 are well separated; and also the tendency, with the 

 exception that with sulphuric acid, for tl i ons to 



be of moderate to low or very low intensity. In the 

 sulphuric-acid reaction gelatinization proceeds so qo 

 that the curves are the same or practically the same, ami 

 in that with i>; rogallic acid the curves are quite close, yel 

 sufficiently separated and uniform in their courses to 

 indicate clearly the reaction-inl elationships. 



(3) The relations of the parental cun es to each other 

 and to the hybrid vary in the i : moreover 



\ary during the progress of the reactions. 



i .i The curve of N. glot the highest 



of the three in the on with chloral hydrate; the 



: of those v. ith nit I and then 



into i mi diafc intermediate durin ; o those with 



chromii acid, otherwise the lowest; and lowest in those 

 with pyrogallic acid. 



I The hybrid curve tends to I" 

 in relation to the paren 



of the three in the pyrogallic-ai i on; the 1 



•■■ with chloral hydrate and nitric acid ; and 1 

 n .ei oi arly the whole 60-minute period in 

 with chromic acid, and finally intermediate hut clo 

 N. gloria m undi. 



' An i arly period of comparative 



Or more of tie - in all of the 

 . v, i, | i a of 1 he quii k with sul- 

 phuric acid, but in thai with nil i i only 

 in the relation of the hj brid. 



(6) The earlii 

 eparated for differential pui 



sulphuric-acid read ion pid that an entia- 



tion musl be made at the ver of the rea 



In the chromic-acid reaction it is probabl] al l im 



i those with chloral hydrate and nitric acid probably at 

 30 minutes; and in that with pyrogallic acid pro 

 at 45 or 60 minutes. 



Reaction-intensities of the Etbrid. 

 Tins section treats of the reaction-intensities of the 

 hybrid as regards sameness, intermedii 



deficit in relation to the parents. (Table A 15 and 

 Charts D28 1 ; to D 292.) 



The reactivities of the hybrid are the same as those 

 of the seed parent in the iodine reaction; the .-ante as 

 those of the pollen parenl in the polarization and safranin 



reactions; the same as tho o i parents in no 



reaction; intermediate in those with gentian violet and 

 sulphuric acid, in both being mid-intermediati 

 in those with temperature ai i gallic arid (in one 

 closer to the seed parent and in r closi r to the 



pollen parent) ; and lowest in those v* al hydrate, 



chromic acid, and □ 1 ( in one being cl iser to the 



eed parent, in one closer to the pollen parent, and in one 

 as close to one as to the other parenl I. 



The following is a summary of the rea tensi- 



ties: Same as seed parent, 1; same as pollen | 

 same as both parents, 0; intermediate, 2; highest, 2; 

 lowest, 3. 



The parents seem to have about equal influence on the 



perties of the starch of the hybrid. 



Composite Curve os chi R ■ cion-intensities. 



This section treats of thi i site curves of the 



ities, showing the dif ion oi' the 



starches of Narcissus gloria mundi, N. poeticus on 

 erg cross. (Chan E 15. 1 

 The most conspicuous features of this chart are: 



(1) The close correspondence of all three curves in 

 their i 



(2 ) In N. < ed with the other 

 parenl the hig - with polarization, io 



iperature ; r with chn 



acid and nitrii 



with p\ rogallic acid and nitric acid. 



